# locust777

////判断是不是字母
//
//#include<stdio.h>
//#include<windows.h>
//int main()
//{
//	char ch = 0;
//	while(scanf("%c",&ch) == 1)
//	{
//	if((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))
//		printf("%c is an alphabet.\n",ch);
//	else 
//		printf("%c is not alphabet.\n",ch);
//
//	getchar();//ch
//	}
//system("pause");
//return 0;
//}
//


#include<stdio.h>
#include<windows.h>
int main()
{
	char ch = 0;
	//%c的前面加空格
	//跳过下一个字符之前的所有空白字符
	while(scanf(" %c",&ch) == 1)
	{
	//if((ch >= 'A' && ch <= 'Z') || (ch >= 'a' && ch <= 'z'))
	if(isalpha(ch))
		printf("%c is an alphabet.\n",ch);
	else 
		printf("%c is not alphabet.\n",ch);

	//getchar();//ch
	}
system("pause");
return 0;
}
